you can see a full report on good morning america on abc7. >>> now to a dramatic and potentially deadly rescue mission under the sea caught on video. divers in the pacific ocean 250 miles off the shores of mexico came upon a giant whale sharken tang getted in a rope -- shark entangled in a rope is struggling for life. >> they turned into an unexpected rescue mission where divers 250 miles south of cabo san lucas came upon a 30-foot whale shark in serious trouble. a thick rope wound so tightly around its body and it had been there so long bar gnaw will cays were -- barnicals were building up on it. >> experienced dive master sprung into action with his pocket knife as the fellow divers looked on anxiously. more than a hundred feet beneath the surface. >> it wasn't difficult. >> as the rope falls away, the gentle giant moves on wounded, but finally free. their mission of mercy accomplished. and back aboard their boat, a hero's welcome. abc news, noshing. abc news, new york. >> good for them for doing that. >> absolutely. >>> the fog is moving in already. it is a pretty good sign thatg r e